Portion of a keyboard



FIG. 1 is a perspective view of a portion of a keyboard showing our newdesign;

FIG. 2 is a top plan view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a rear elevational view thereof; and,

FIG. 6 is an alternative perspective view thereof.

The bottom of the keyboard forms no part of the claimed design. Thebroken line disclosure in all views is for illustrative purposes onlyand forms no part of the claimed design.

The ornamental design for a portion of a keyboard, as shown anddescribed.